Arm curl exercising machine



FIG. 1 is a right front perspective view of an arm curl exercising machine showing my new design;

FIG. 2 is a left side elevational view thereof; the right side elevational view being substantially a mirror image of the left side elevational view;

FIG. 3 is a rear elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for an arm curl exercising machine, substantially as shown and described. 